Liquid-applying apparatus



June 25, 1935. T. J. DOYLE LIQUID APPLYING APPARATUS Filed Dec. 15, 1931 2 Sheets-Sheet 1 June 25, 1935. T. J. DOYLE LIQUID APPLYING APPARATUS Filed Dec. 15, 1931 2 Sheets-Sheet 2 Patented June 25, 1935 PATENT OFFICE! 1 1 LIQUID-APPLYING APPARATUS Thomas J. Doyle, Lynn, Mass., assignor to United Shoe 'Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application December 15, 1931, Serial No. 581,194 I 7 .5 Claims.

This invention relates to apparatus for applying liquid to an article and is herein illustrated as embodied in an apparatus for applying an adhesive substance such as a latex adhesive to parts of boots and shoes.

In the manufacture of certain kinds of shoes, it

is customary to apply rubber latex cement, to the margins of certain parts of the'shoe, such as the lining, the doubler, the feather of the insole and 1 various adjacent parts prior to a lasting operation so that, after the shoe has been lasted, these cemented portions will'adhere firmly to one another.

Rubber latex, however, is a liquid which presents .difficulties in handling due to itstendency to coagulate. In particular, coagulation is caused very readily by exposing it to the atmosphere or by rubbing it between opposing faces of two rigid,

members.

According to one feature of the invention there is provided a receptacle for liquid, a tube leading from the receptacle and having a freely movable portion, a nozzle leading from the tube, a liquidapplying member arranged to receive on the outside thereof liquid which flows from the nozzle and a valve which normally extends over the dew liver-y opening of the nozzle, said valve being manually movable'away from saidopening to permit the liquid to flow and back again to shut ofi the flow of liquid by movements of recession and approach without appreciable sliding contact with the end of the nozzle. In the illustrated construction the receptacle for liquid is of the barometric feed type, the tube is a flexible rubber one,

brush and the valve is rigid with a stem which may be swung about a pivot located at one side of the axis of the nozzle in such position that swinging the stem movesthe valve from closed to open position and vice versa without sliding contact with the end of the nozzle. With such a construction the latex is protected. from the action of the atmosphere; it is delivered directly tothe outside of the brush whereby gumming of thebristles is minimized; and it is not rubbed between the end of the nozzle and the valve during the movements of the valve. T

In an apparatus of this general type it, is desirable that the brush or other liquid-applying memher be readily removable and replaceable. To this end, in. accordance with another feature of theinvention, the holder for the brush or other liquid-applying member and the nozzle are provided with quickly .detachable interengaging the liquid-applyingmember takes the form of a brush, the nozzle empties uponthe outside of the means so that the brush maybe readily replaced at any time by a new one.

These and other features of the invention, including certain details of construction and come binations of parts, will be'described as embodied 5 man illustrated apparatus and pointed .out in the appended claims.

Referring to the accompanying drawings,

Fig. l is an elevation of an apparatus in which the present inventionis embodied; v I

Fig- 2 is a detail principally'in elevation of the adjustable mounting ofthe' rod which supports the slack in the flexible tube; a

Fig. 3 is an elevation of the nozzle having mounted thereon one form of brush holder,

Fig. 4 is an elevation of the nozzle having mounted thereon another form ofbrush holder;

Fig. 5 is a perspective of the brush holder shown inFig.4;

Fig. 6 is a perspective of apartly finished shoe to parts of which cement is being applied; and" v Fig. 7 is a View on a larger scale of Zthe'end of. e the nozzle and thecooperating valve showing in'. dash lines: the position of the valve when open and indicating by a -dotand .dash line the path of movement of the valve toward and away from the end of the nozzle.

The illustrated apparatus comprises a base 1 adapted to rest upona bench. Rising from one end of *the base are two supports in the form-of rods'one of which is shown at 9, fastened in sockets in the base by set screws one of which" is shown at H. A'djustably fastenedto the upper.-

portions of the rods by set screws one of which hold an inverted bottle I! containing a liquid cement, such as rubber latex, said bottle having a valve l9 adapted to be held open, when the bottle is 'in'-the position shown, by contact of the lower end of a valve stem 2! with an abutment 23 which rises from the bottom ,of a re,- ceptacle 25. Thisreceptacle has a screen 26 and is adjustably fastened to the lower end of the. casting I 5 by means of a stud 2'! removably held in a socket in the casting by a set screw 29, said stud having a lower end of reduced diameter which passes through a bore in a projectingportion of the receptacle 25 and is threaded to receive a nut-3| by which the stud is held firmly in place in said projecting portion. This'construction providesfa barometric feed for the latex. or other liquid so as to maintain a predetermined-quantity of it at all times in the receptacle 25. 'After the set screws I3 have been loosened the height of the whole liquid supply may be adjusted; and, after the set screw 29 has been loosened, the receptacle 25 with its attached stud 21 may be removed to be cleaned or replaced.

Extending from the bottom of the receptacle 25 below the level of the screen 26 is an outlet pipe provided with a valve 33; and leading from the pipe is a tube 32, herein shown as made of rubber, the outer end of which is freely movable.- Leading from the outer end of the rubber tube is a nozzle 35 (Figs. 1 and'3) a portion of which I35 serves as a hand-hold by which the nozzle may be readily manipulated. Extending over the out a let of the nozzle is a valve SL'the stem with which the valve is integral being pivotedat 39 to an elongated collar 4| held on the nozzle'by'a pinch-screw 43 which passes through a split lug.

valve 37 has a finger-piece I31 and is held nor-f mally closed by a compression spring 45. Extending from the side of the collar 4| is a forked lug Ml, one fork being provided with a smooth, hole to receive the stem of 'a pinch-screw 41 and the other fork being provided with an'alined threaded hole to receive the threaded end of the screw. Located between'the forks is a flattened end of a bent member 49 having therein a slot 5| so that the bent member may be held in various adjusted positions. The other end of the bent member 49 has a tapered projecting portion to fit frictionally in a conical socket in one'end of a brush-holder 53 in the other end of which a brush 55, or other liquid-applying member, is fastened. It will be noted that the axis ofthe brushcis at an angle to the axis of the nozzle so. that liquid is delivered by the nozzle upon the side surface of the brush. AsiIlustrate d, the two axes cross each other so that liquid is applied approximately along a middle line of that side of the brush which is adjacent to'the nozzle.

With the construction shown, the liquid flows evenly over the outside of the brush in position to be readily transferred to the shoepart or'other article to be coated; and the brush mayreadily be removed and replaced when desired since'its I holder is frictionally held at the end of-the bent member 49. Moreover, since, the nozzle is located outside the brush, instead of inthe brush, the clogging. of the-nozzle by reason of hardening of cement in the brush (for example of the latex) is avoided. g I

The construction shown in Fig. 5 is somewhat different from that just described. The nozzle 35 with its hand-hold I35, and the valve 3'! hav ing its stem pivoted at 39 and acted upon by the by coagulation compression spring 45 may be-llkethe corre-j spending parts shown in Fig. 4. The collar 56,

however, isshorter than the'corresponding collar.

4|, and the mounting of the brush is difierent. The brush-holder 51 comprises a socket in'which the brush 59 is held. The end of the brushholder remote from the brush islformed as a l spring clip having wings 6| adapted to receive between them a'fiattened portion near theextreme end of the nozzle, said flattened portion being shown in Fig. 4 at 63. The brush-holder 51 is bent, as shown, so that in this construction, as inthat of Fig. 4,1the axis of the brush is at an way of the operator any slack in the tube 32,

there is provided a support for such slack in the form of a rod having at its outer end a spring ,clip 51 to engage any desired locality on the tube.

This rod passes through a horizontal bore in the lower end of a vertical stud (Fig. 2) which passes loosely through a vertical bore in a lug on the far side of the receptacle 25, as seen in Fig. "l,-the upper portion of the stud being threaded to receive a nut H.

about the axis of the stud 53 and may also be moved lengthwise through the horizontal bore in the lower end of the stud. When, howeventhe nut "H is tightened, the rod is pulled up against the underside of the lug and thus firmly held in adjusted position. In Fig. 6 a portion of the apparatus is shown as being used to apply latex cement to portions of a partly finished shoe.

It will be noted that the delivery end'or outlet face of the nozzle and the adjacent operative face of the valve 31 are flat and that the axis of the pivot 33 is transverse to the axis of the nozzle and located at one side thereof so that the outlet face is not tangent to a circle through said axis. Consequently, when the handle l3'l of the valve is depressed and released, the valve moves in the arc of a circle which intersects the outlet face of the nozzle and is indicated by'a dot and dash line in Fig. 7.- It is thus moved away from the nozzle to start the flow of latex and back again to shut off the fiow without causing latex to be rubbed between the valve and the end of the nozzle.

The apparatus is particularly well adapted for use in the manufacture of the particular shoe shown, which is disclosed in application Serial No.'57'6 ,342, filed November 20, 1931 in the name of George Goddu. This shoe is herein shown in that stage of manufacture in which the, assembled upper has been puller over and temporarily fastened by tacks t0 the insole I00 at the heel and toe ends. The illustrated assembled upper comprises the upper proper 200, a lining 300, a doubler 400, a counter 500 andcertainother parts. Before this shoe is side-lasted, it is necessary that cement be applied to the featherof the insole from about the tip line to the heel breast line and also to the margins, between those two lines, of the vamp and other parts or the assembled upper which, in the lasted shoe, will be superposed upon the feather of the insole and upon each other, so that they will adhere firmly to one another and to the insole if they are held in lasted position until the cement sets. In using the apparatus on such a piece of work and assuming that the shoe is held. bottomside-fup, as shown, by heel and toe rests, the operator with one hand successively bends out of the way certain parts of the assembled upper .to

When the nut has been loosened, the supporting rod 65-may be swung give free access to other parts thereof and to the insole, and with the other hand applies the brush to the parts and opens the valve 31 as maybe in position to be operated upon, it is desirable to provide a receptacle in which the brush may be placed, and preferably a receptacle containing a liquid in which the brush may remain immersed, so that the cement which it carries will not become thick or coagulated as it would tend to become were the brush exposed to the action of the atmosphere. To this end, there is supported by the base 1 a small receptacle 13 to receive the brush when it is not in use, two pairs of spring clips 15 being mounted adjacent to the rim of ,the receptacle in either pair of which the nozzle may be held in the manner shown in Fig. 1. A supply of a suitable liquid 11, for example water if the cement is rubber latex, will preferably be maintained in this receptacle in which the brush may be immersed to protect it from the air.

Although the invention has been set forth as embodied in a, particular apparatus it should be understood that the invention is not limited in the scope of its application to the particular apparatus which has been shown and described.

Having thus described the'invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. An apparatus for applying liquid having in combination a receptacle for liquid, a tube leading from said receptacle, a nozzle leading from said tube, a member adjustably mounted upon the nozzle, a brush holding member, and interengaging friction means formed on said members for attaching them to each other whereby said members may be separated from one another by merely pulling them apart.

2. An apparatus for applying liquidvhaving in combination a receptacle for liquid, a tube leading from said receptacle, a nozzle leading from said tube, a member carried by the nozzle, a brush holding member, and friction means capable of being readily disengaged for attaching the brush holding member to the other member, said means comprising interengaging portions on said members formed respectively as a conical socket and an element which fits the socket.

3. An apparatus for applying liquid having in combination a receptacle for liquid, a tube leading from said receptacle, a nozzle leading from said tube, said nozzle being provided on opposite sides thereof with fiat surfaces, a holder, and a brush carried by the holder, said holder being provided with a spring clip having flat-faced wings adapted to receive between them the flattended portions of the nozzle.

4. An apparatus for applying rubber latex having, in combination, a receptacle for latex, a tube leading from said receptacle, a nozzle leading from said tube, a brush located to receive latex upon the outside thereof, a manually operable valve normally held in closed position over the delivery opening of the nozzle, and -means for mounting the valve for movement in a curved path toward and from and intersecting the outlet face of the nozzle.

5. An apparatus for applying rubber latex having, in combination, a receptacle for latex, a tube leading from said receptacle, a nozzle leading from said tube and having a flat outlet face, a flat faced valve cooperating therewith, a brush located to receive latex upon the outside thereof, a pivot the axis of which extends at an angle to that of the nozzle andis located at one side of the nozzle axis, said valve face intersecting a circle centered on. the pivot axis, a stem rigid with the valve and mounted on the pivot, and a spring normally acting to hold the valve in closed position over the delivery opening of the nozzle whereby, when the valve stem is swung in one direction and the other about the pivot, the valve opens and closes the delivery opening of the nozzle by simple movements of recession and ap-'- 

